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A106 GR. B Carbon Steel Seamless Pipes

 

ASTM A106 Seamless Pressure Pipe (also known as ASME SA106 pipe) is commonly used in the construction of oil and gas refineries, power plants, petrochemical plants, boilers, and ships where the piping must transport fluids and gasses that exhibit higher temperatures and pressure levels.

This specification covers seamless carbon steel pipe for high-temperature service

Sizes (Seamless): 1/2" NB - 60" NB

Sizes (ERW): 1/2" NB - 24" NB

Sizes (SAW): 16" NB - 100" NB  

Wall Thickness available:
Schedule 20 - Schedule XXS (heavier on request) up to 250 mm thk.


 Material Grades

 High Temperature Seamless Pipe  ASTM A106 Gr. B/C, API 5L Gr. B, ASTM A53 Gr. B
 Heat Exchanger Seamless Tube  ASTM A179
 Low Temperature Seamless Pipe  ASTM A333 Gr. 3/6
 Low Temperature Seamless Tube  ASTM A334 Gr. 6
 High Yield Seamless Pipe  API 5L Gr. X42/X46/X52/X56/X60/X65/X70/X80 PSL-1/PSL-2
 High Yield Seamless Pipe  ISO 3183 Gr.L245, L290, L320, L360, L390, L415, L450, L485
 Atmospheric & Low Temp EFW Pipes  ASTM A671 Gr. CC60/CC65/CC70
 High Pressure & Moderate Temp EFW Pipes  ASTM A672 Gr. B60/B65/B70/C55/C60/C65/C70
 High Yield ERW/SAW Pipe  API 5L Gr. X42/X46/X52/X56/X60/X65/X70/X80 PSL-1/PSL-2
 High Yield ERW/SAW Pipe  ISO 3183 Gr.L245, L290, L320, L360, L390, L415, L450, L485


 Additional Testing :

   NACE MR0175, NACE TM0177, NACE TM0284, HIC TEST, SSC TEST, H2 SERVICE, IBR, etc.

 Dimensions :

    All Pipe is manufactured and inspected/tested to the relevant standards including ASTM, ASME, API.

   Chemical Composition ASTM A106 Carbon Steel Pipes Grades

  Grade A Grade B Grade C Total of Cr, Cu, Mo, Ni, and V shall not exceed 1%
Carbon max. % 0.25 0.30 0.35
Manganese % 0.27 to 0.93 0.29 to 1.06 0.29 to 1.06
Phosphorous, max. % 0.035 0.035 0.035
Sulfur, max. % 0.035 0.035 0.035
Silicon, min.% 0.10 0.10 0.10
Chrome, max. % 0.40 0.40 0.40
Copper, max. % 0.40 0.40 0.40
Molybdenum, max. % 0.15 0.15 0.15
Nickel, max. % 0.40 0.40 0.40
Vanadium, min.% 0.08 0.08 0.08

Permissible Variations in Wall Thickness

The minimum wall thickness at any point shall not be more than 12.5% under the nominal wall thickness specified.

Permissible Variations in  Weights per Foot Weight of any length shall not vary more than 10% over and 3.5% under that specified. NOTE -- NPS 4 and smaller -- weighed in lots. Larger sizes shall be weighed separately by length. Permissible Variations in Outside Diameter
Outside Diameter at any point shall not vary from standard specified more than:


NPS [DN Designator] Over Under
in. mm in. mm
1/8 to 1-1/2 [6 to 40], incl 1/64 (0.015) 0.4 1/64 (0.015) 0.4
Over 1-1/2 to 4 [40 to 100], incl 1/32 (0.031) 0.8 1/32 (0.031) 0.8
Over 4 to 8 [100 to 200], incl 1/16 (0.062) 1.6 1/32 (0.031) 0.8
Over 8 to 18 [200 to 450], incl 3/32 (0.093) 2.4 1/32 (0.031) 0.8
Over 18 to 26 [450 to 650], incl 1/8 (0.125) 3.2 1/32 (0.031) 0.8

Over 26 to 34 [650 to 859], incl

 

 5/32 (0.156) 4.0 1/32 (0.031) 0.8
Over 34 to 48 [850 to 1200], incl 3/16 (0.187) 4.8 1/32 (0.031) 0.8

 Tensile Requirements

  Seamless
  Grade A Grade B Grade C
Tensile Strength, min., psi 48,000 60,000 00
Yield Strength, min., psi 30,000 35,000 40,000


 Number of Tests Required

  NPS On One Length from Each Lot of
Tensile 5 and smaller 400 or less
6 and larger 200 or less
Bending 2 and smaller 400 or less
Flattening 2 through 5 400 or less
6 and over 200 or less

 Hydrostatic Testing

Inspection test pressures produce a stress in the pipe wall equal to 60% of specified minimum yield strength (SMYS) at room temperature. Maximum Pressures are not to exceed 2500 psi for NPS3 and under 2800 psi for the larger sizes. Pressure is maintained for not less than 5 seconds.


 Mechanical Tests Specified

Tensile Test -- NPS 8 and larger -- either transverse or longitudinal acceptable
Smaller than NPS 8 -- weighed in lots. Larger sizes -- by length.
Flattening Test -- NPS 2-1/2 and larger.

Bending Test (Cold) -- NPS 2 and under.

  Degree of Bend Diameter of Mandrel
For Normal A106 Uses 90 12 x nom dia. of pipe
For Close Coiling 180 8 x nom dia. of pipe

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